ICP-OES法测定燃香类产品中Cr元素的不确定度评定

doi:10.16085/j.issn.1000-6613.2016.s2.019

化工进展 ›› 2016, Vol. 35 ›› Issue (S2): 116-120.DOI: 10.16085/j.issn.1000-6613.2016.s2.019

ICP-OES法测定燃香类产品中Cr元素的不确定度评定

陈金凤, 刘中洁, 吴德淮

福建省香产品质量检验中心, 福建永春 362600

收稿日期:2016-08-29 修回日期:2016-09-13 出版日期:2016-12-31 发布日期:2016-12-22
通讯作者: 陈金凤(1988-),女,硕士,主要从事实验室技术管理及理化检验工作。E-mail:690581773@qq.com。

Uncertainty evaluation of chromium content in incense by ICP-OES

CHEN Jinfeng, LIU Zhongjie, WU Dehuai

Fujian Inspection Center of Incense Product, Yongchun 362600, Fujian, China

Received:2016-08-29 Revised:2016-09-13 Online:2016-12-31 Published:2016-12-22

摘要/Abstract

摘要： 采用ICP-OES法对燃香类产品中Cr元素含量进行测定，依据JJF 1059-1999《测量不确定度评定与表示》，建立数学模型，对ICP-OES法测定燃香类产品中Cr元素的不确定度评定产生的来源进行识别，对不确定度的分量进行计算、合成与评估，得出Cr元素在一定浓度范围内的不确定度。测得样品中W（Cr）=56.7mg/kg，W（Cr）测定结果的扩展不确定度为U=2mg/kg，K=2。结果表明，计量器具的精度和标准曲线的拟合对不确定度的影响较大，实际工作中可通过定期对仪器和计量器具进行校准与检定，来减少对不确定度的影响。通过测量不确定度的评定，掌握ICP-OES法测定燃香类产品中Cr元素含量结果的准确性，从而保证检测工作的质量。

关键词: 电感耦合等离子体发射光谱, 燃香类产品, 不确定度, 评定

Abstract: In this paper,the chromium content in incense was determinated by ICP-OES,the mathematical model was established according to JJF1059-1999 "Evaluation and Expression of Uncertainty in Measurement".The causes of uncertainty to determination of the Chromium content in incense by ICP-OES were identified,every components of the uncertainty was calculated,and the uncertainty result within a certain range of chromium element concentrations was calculated.The result was W(Cr)=56.7mg/kg,and U=2mg/kg,K=2.The result showed that accuracy of measuring instrument and standard curve fitting both have great effect on uncertainty.In practice,their effects on uncertainty can be reduced by regularly calibrating and verifying instruments and meters.The evaluation of uncertainty can obtain the accuracy of results of determination of the chromium element in incense by ICP-OES,and assure the detection quality.

Key words: ICP-OES, burnable incense, uncertainty, evaluation

中图分类号:

O651

陈金凤, 刘中洁, 吴德淮. ICP-OES法测定燃香类产品中Cr元素的不确定度评定[J]. 化工进展, 2016, 35(S2): 116-120.

CHEN Jinfeng, LIU Zhongjie, WU Dehuai. Uncertainty evaluation of chromium content in incense by ICP-OES[J]. Chemical Industry and Engineering Progree, 2016, 35(S2): 116-120.

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ICP-OES法测定燃香类产品中Cr元素的不确定度评定

Uncertainty evaluation of chromium content in incense by ICP-OES

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